KR101507523B1 - Slab track structure for railway with lattice approach block, and construction method for the same - Google Patents

Abstract

 The concrete lattice frame structure of the lattice approach block acts as Rahmen so that the vertical load is supported by the concrete transverse member and the vertical supporting force can be supported by the concrete longitudinal member as a column, It is possible to gradually change the support rigidity in the vertical direction by arranging the concrete longitudinal members having different lengths continuously on the concrete treated gravel at the structure connecting portion of the bridge and the railway, Type approach block provided with a lattice-type approach block capable of preventing settlement after laying of a concrete slab track and preventing occurrence of cracks by the approach block, and a method of constructing the railway slab track structure.

Description

TECHNICAL FIELD [0001] The present invention relates to a railway slab track structure having a lattice-type approach block,

[0001] The present invention relates to a railway slab track structure, and more particularly, to a railway slab track structure in which an approach block, which is formed at a structure connecting portion of a bridge and a railway, And a method of constructing the same.

Generally, a structure connecting portion or a ground connecting portion refers to a section where the supporting stiffness of a sub-structure supporting a track, such as a bridge, an earthwork in a tunnel, a ground in a tunnel, an unmanned ground track in an induced phase orbit, Due to the difference, there is a step difference in the construction space or a rapid change of the dynamic characteristic is likely to lead to the progress of the track misalignment and the deterioration of the ride feeling at the time of running the train.

Although many studies have been conducted to solve these problems, no breakthrough solution has been proposed so far. The reason for this is that the problem at the actual structure connection part includes various causes such as environmental causes such as rainfall, freezing and drainage, and structural causes of the earthwork and bridges in addition to the unevenness of running and supporting stiffness of the train.

In addition, these structural connections behave very complicatedly due to the interaction of bridges, trajectories, and roadbed, and it is very difficult and often empirically assessed to evaluate the correct behavior at the design stage. Therefore, various approaches and efforts are needed to improve the understanding and performance of the connection part of the structure. The approach of reinforcing the connection part of the structure includes an approach block, an approach slab, a support slab, and a shear key ) May be used.

FIG. 1 is a view showing a track slab track structure having an approach block according to a conventional technique, and FIG. 2 is a view for explaining a problem of a rail slab track structure having an approach block according to the related art.

Referring to FIG. 1, a railway slab track structure having an approach block according to the related art includes alternating 10, concrete treated gravel 30, underfill and overfill in a bridges 20 and a structure connection portion of a railway, And a concrete treated road 40, wherein the concrete treated gravel 30 serves as an approach block.

As shown in Fig. 1, in the case of a road bridge 20, a railway bridge, etc., the alternation 10 is mainly composed of reinforced concrete, and the toe formed on the back surface is composed of gravel or the like. As shown in FIG. 2B, since the construction is performed using materials having different stiffnesses from each other, settlement of the soil is caused even if a compaction operation is performed, and a portion where the alternation 10 and the soil contact each other is easily buried do. This phenomenon occurs not only in the alternation (10) but also in concrete culvert. The same phenomenon occurs in the concrete culvert side or the soil which is filled in the back side of the retaining wall.

Also, as shown in FIG. 2, the earth section adjacent to the alternation, tunnel, and box structure is relatively small in rigidity as compared with the structure, so that when the same load is applied, So that settlement occurs. In order to prevent sudden change of stiffness with such a structure and a lugging section, a connecting structure is provided in the middle of this portion so that the difference in stiffness is gentle. Particularly, in the case of high-speed railway, the flatness of the track is very important factor for the speed, so if the displacement exceeds the allowable value, the shock and the impact due to the step of the track surface will affect the operation and safety of the vehicle.

Particularly, in the case of the alternation (10), since the vertical load and the horizontal load are generated at the same time, unlike the structure normally receiving the vertical load, it is necessary to strengthen the structure so as to resist it. However, the current structure is complicated in construction steps such as approach slab, approach block, and cement stabilization treatment, and various types of materials are used, so settlement behaves differently due to material properties, and most of the vertical loads .

For example, FIG. 1 shows a case where an approach block is implemented as a concrete treated gravel 30 in a reinforcing method of a structure connecting portion according to the related art. For example, when a lower embankment and an embanking are used, At the position where the bridge 10 is connected to the structure such as the alternating system 10, sudden steps are generated in the formation level according to the difference in settlement between the embankment and the structure, and irregularity of track ) And deteriorating ride quality. Accordingly, in order to avoid a sudden change in the level difference or step strength, it is necessary to provide a buffer section called an approach block. Such an approach block must be sufficiently fastened with a high-quality material (particle size adjustment stone, etc.) so as not to cause compression settlement itself.

Specifically, as shown by a reference numeral A in FIG. 2, the kind of a track bed, which is a sub-structure of a track on which a train 50 travels, In the structure connecting portion, which is a part that changes into the soil embanking, even though the bridge 20, which is a concrete, and the stiffness difference of the earthwork constructed by dirt are built up, , So that settlement of the earth section may occur.

In addition, when the train 50 passes through the structure connecting portion, it is impacted to deteriorate ride comfort and damage to the vehicle and track structure. This impacts the underlying structure and accelerates the settlement, and in severe cases, maintenance of the track is required. Particularly, in the case of a high-speed train, such an influence becomes greater, and a similar problem occurs even if the structure of the track is not only a gravel but also a concrete slab track structure. This is because the concrete slab is not a structure made to bend resistant against the load in the vertical direction like the upper plate of the bridge 10.

Accordingly, the approach block is a roadbed structure made on the back surface of the shift 10 to mitigate the impact of the train 50 by gradually changing the stiffness in a region where the stiffness is abruptly changed, such as a bridge connection portion. Such an approach block installs more than a certain length of the bridge connection part, and sets a section having a moderate stiffness between the concrete and the earthwork to solve the structural stress problem.

However, the approach block according to the prior art has a problem that it is difficult to lay the concrete containing the concrete in a predetermined shape at the time of actual construction. In addition, there are many cases in which settlement occurs after the installation of such an approach block. For example, in the case of a concrete slab track, cracks may occur. In addition, the railway slab track structure provided with the approach block according to the related art has a problem that the construction is complicated, difficult, and requires a long period of time.

Korean Unexamined Patent Publication No. 2009-130637 (Publication date: December 24, 2009), entitled "Backfill reinforcement structure of rigid structure & Korean Patent No. 10-173555 filed on Aug. 5, 1996, entitled "Method of preventing step on road with soft ground" Korean Registered Patent No. 10-620057 filed on December 24, 2004, entitled "Method of Reinforcing Support Rigidity of Railway Bridges and Earth Connection Parts" Korean Registered Patent No. 10-768777 filed on November 8, 2006, entitled "Method of Reinforcing Ground in Concrete Railroad" Korean Patent No. 10-663058 filed on February 24, 2005, entitled " Japanese Unexamined Patent Publication No. 2010-138661 (Publication date: June 24, 2010), entitled " Japanese Unexamined Patent Publication No. 2009-215744 (Disclosure Date: September 24, 2009), title of invention: "Strengthening method of railroad roadbed"

According to an aspect of the present invention, there is provided a method for constructing a lattice-type approach block, comprising: providing a concrete lattice frame structure of a lattice-type approach block acting as a raiser, supporting a vertical load in a concrete lateral member, The present invention provides a railway slab track structure including a grid-type approach block and a construction method thereof.

Another object of the present invention is to provide a lattice-type approach block capable of gradually changing the support stiffness in the vertical direction by arranging concrete longitudinal members having different lengths continuously on the concrete treated gravel at bridge connecting structures and railway structures, And a method of constructing the railway slab track structure.

Another object of the present invention is to provide a railway system having a lattice-type approach block which is superior in workability and performance to a conventional approach block to prevent settlement after laying of a concrete slab track, Slab track structure and a construction method thereof.

According to an aspect of the present invention, there is provided a railway slab track structure having a lattice-type approach block according to the present invention, the railway slab track structure being formed at a structure connecting portion of a bridge and a railway, Concrete treated gravel installed on alternate backside to secure end bearing capacity at the structure connection of railway; A bottom embankment laminated on the paperboard at the side of the concrete treated gravel; The upper and lower concrete transverse members and the upper and lower concrete longitudinal members are made of a lattice frame structure and behave as Rahmen and the support rigidity in the vertical direction gradually changes at the structure connecting portion of the bridge and the railway. A lattice approach block in which a lower concrete longitudinal member having a different length is continuously embedded and disposed on the concrete treated gravel; An upper embankment laminated on the lower embankment; A concrete upper plate formed on the lattice-like approach block and the upper clay; And a railway slab track including a track, a sleeper, and a rail and formed on the concrete top plate.

The upper and lower concrete longitudinal members of the lattice-type approach block serve as cross beams of the grid-like approach block to support a horizontal load, and the upper and lower concrete longitudinal members support a vertical load And serves as a column of the lattice-type approach block.

Here, the number of the upper and lower concrete transverse members and the upper and lower concrete longitudinal members may be varied corresponding to the widths of the bridges and the alternating heights, respectively.

The lattice-type approach block includes a lower concrete longitudinal member continuously disposed at different lengths on the concrete treated gravel so as to gradually change the support stiffness in the vertical direction at a structure connecting portion of the bridge and the railway; A lower concrete transverse member which is precasted and joined to the lower concrete longitudinal member; An upper concrete longitudinal member coupled with the lower concrete transverse member; And a top concrete transverse member that is pre-cast and engages the top concrete longitudinal member.

In this case, each of the upper and lower concrete transverse members is a precast in which a transverse concrete transverse member and a longitudinal concrete transverse member are lattice-shaped, and serves as a crossing of the lattice-type approach block.

The upper concrete transverse member may be bonded onto the concrete upper plate.

Here, each of the upper and lower concrete longitudinal members is installed in a spot-putting manner so as to be able to engage with the lower portion of the crossing point of the transverse concrete transverse member and the longitudinal concrete transverse member to serve as a column of the lattice-type approach block .

The ends of the upper concrete transverse members disposed at the farthest from the alternate back surface serve as cantilevers and have the same rigidity as the ground panels.

According to another aspect of the present invention, there is provided a method of constructing a railway slab track structure including a lattice-type approach block according to the present invention, comprising the steps of: constructing a railway slab track structure formed at a structure connecting portion of a bridge and a railway, The method comprising the steps of: a) pre-casting a concrete transverse member of a lattice-type approach block to be connected to a structure connection; b) applying concrete treated gravel and underlying filler to the alternating back surface of the structure connection portion; c) burying the lower concrete longitudinal members of the grid-like approach block on the concrete-treated gravel in a field-borne manner; d) coupling the lower concrete transverse member onto the lower concrete longitudinal member; e) joining the upper concrete longitudinal member on the lower concrete transverse member; f) joining the upper concrete transverse member onto the upper concrete longitudinal member; And g) constructing a concrete top plate so as to be joined to the upper concrete transverse member, wherein in step c), the bottom concrete having a different length is used to gradually change the support rigidity in the vertical direction at the structure connecting portion of the bridge and the railway. Characterized in that the longitudinal members are continuously buried on the concrete treated gravel.

According to the present invention, the concrete lattice frame structure of the lattice-type approach block acts as a ram, the vertical load is supported by the concrete transverse member, and the vertical support force acts as a column to support the vertical longitudinal member.

According to the present invention, it is possible to gradually change the supporting stiffness in the vertical direction by arranging the concrete longitudinal members having different lengths continuously on the concrete treated gravel at the structure connecting portion of the bridge and the railway.

According to the present invention, it is possible to prevent settlement after laying of a concrete slab track and prevent cracks from occurring due to a grid-like approach block having better workability and superior performance than existing approach blocks.

According to the present invention, the lattice-type approach block is manufactured with a relatively light weight so that the settlement due to its own weight can be minimized, and the leading end bearing capacity of the bedrock increases due to the lattice-like frame structure.

According to the present invention, the precise construction of the lattice-like approach block makes it possible to shorten the construction time and the construction time.

1 is a view showing a railway slab track structure having an approach block according to a conventional technique.
2 is a view for explaining a problem of a railway slab track structure having an approach block according to a related art.
3 is a view showing a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention.
4 is a perspective view showing a lattice-type approach block according to an embodiment of the present invention.
5 is a vertical cross-sectional view showing a lattice-type approach block according to an embodiment of the present invention.
6 is a view illustrating a concrete horizontal member of a lattice-type approach block according to an embodiment of the present invention.
7 is a flowchart illustrating a method of constructing a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention.
8A to 8F are views showing a process of forming a grid-like approach block in construction of a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention.
9 is a view for explaining that a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention secures a rigid supporting force.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Railway slab track structure 100 provided with lattice-type approach block 200]

3 is a view showing a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention.

Referring to FIG. 3, a railway slab track structure 100 having a lattice-type approach block according to an embodiment of the present invention is a railway slab track structure formed at a structure connection portion or a earth connection portion of a bridge and a railroad, The bridge 120, the bridge 130, the concrete treated gravel 140, the underfill 150, the overburden 160, the concrete top plate 170, the railway slab track 180, and the grid-like approach block 200 .

The concrete treated gravel 140 is applied to the rear surface of the shift 120 so as to secure the end supporting force at the bridge 130 and the structure connecting portion of the railway.

The underfill 150 is laminated on the paperboard 110 at the side of the concrete treated gravel 140.

The upper embankment 160 is laminated on the lower embankment 150.

The concrete top plate 170 is formed on the lattice-like approach block 200 and the embankment 160 as a concrete treated road.

The railway slab track 180 is formed on the concrete top plate 170, including trajectory, sleepers, and rails so that the train 300 can run.

The grid-like approach block 200 includes upper and lower concrete transverse members 210 and 220 and upper and lower concrete longitudinal members 230 and 240 as a lattice frame, as shown in FIG. And a lower concrete longitudinal member 240 having a different length so as to gradually change the supporting stiffness in the vertical direction at the bridge 130 and the connection part of the structure of the railway is constructed of the concrete treated gravel 140).

In other words, the lattice-type approach block 200 is installed at a connection part of a bridge and a railway structure. At this time, in order to gradually change the support stiffness in the vertical direction, the concrete longitudinal members 240 having different lengths are continuously And is constructed as a lattice to be coupled with the concrete transverse members 210 and 220 by arranging the length of the concrete longitudinal member 240 gradually. At this time, the concrete transverse members 210 and 220 are pre-cast and the concrete longitudinal members 230 and 240 are buried in a field installation manner. Accordingly, precise formation of the grid-like approach block 200 makes it possible to simplify the construction and shorten the construction period.

In addition, the lattice-type approach block 200 is made of a grid-like frame structure using reinforced concrete and behaves as a Rahmen, has a relatively light weight, can minimize settlement due to its own weight, The leading end bearing capacity of the roadbed becomes large.

FIG. 4 is a perspective view illustrating a lattice-type approach block according to an embodiment of the present invention, and FIG. 5 is a vertical cross-sectional view illustrating a lattice-type approach block according to an embodiment of the present invention.

4 and 5, a lattice-type approach block 200 according to an embodiment of the present invention includes an upper concrete transverse member 210, a lower concrete transverse member 220, a upper concrete longitudinal member 230, 235 and a lower concrete longitudinal member 240.

The lower concrete longitudinal member 240 is a variable length lower end concrete longitudinal members 241 to 244 and is formed of the concrete treated gravel 140 so as to gradually change the support stiffness in the vertical direction at the bridge 130 and the structure connection portion of the railway. Are continuously arranged in different lengths.

The lower concrete transverse member 220 is precast fabricated and engages the lower concrete longitudinal member 240.

The upper concrete longitudinal member 230 engages with the lower concrete lateral member 220. At this time, the end of the upper concrete transverse member 210 disposed at the furthest distance from the rear surface of the alternation 120, that is, the end of the uppermost concrete transverse member 210 having the shortest length of the concrete vertical member 230, And has the same rigidity as the ground pattern 110.

The upper concrete transverse member 210 is precast fabricated and engages with the upper concrete longitudinal member 230. At this time, the upper concrete transverse member 210 may be joined onto the concrete upper plate 170.

At this time, the upper and lower concrete transverse members 210 and 220 of the grid-type approach block 200 serve as cross beams of the grid-type approach block 200 to support a horizontal load, The lower concrete longitudinal members 230 and 240 serve as pillars of the grid-like approach block 200 to support a vertical load. In this case, the upper and lower concrete longitudinal members 230 and 240 are buried in a field installation manner. However, the upper and lower concrete longitudinal members 230 and 240 may be pre-cast in a factory just like the upper and lower concrete horizontal members 210 and 220.

FIG. 6 is a view illustrating a concrete horizontal member of a lattice-type approach block according to an embodiment of the present invention.

The number of upper and lower concrete transverse members 210 and 220 of the lattice-type approach block 200 according to the embodiment of the present invention is determined by the number of the bridge 130 The width and the height of the alternation 120. The number of the upper and lower concrete longitudinal members 230 and 240 is formed to correspond to the number of the upper and lower concrete lateral members 210 and 220. That is, each of the upper and lower concrete longitudinal members 230 and 240 is installed in a spot-putting manner so as to be able to engage with a lower portion of an intersection of the transverse concrete transverse member and the longitudinal concrete transverse member, ).

6A, each of the upper and lower concrete transverse members 210 and 220 includes transverse concrete transverse members 211a and 211b and longitudinal concrete transverse members 212a to 212d And is precisely fabricated in a lattice shape to serve as a crossbar of the lattice-type approach block 200. The upper and lower concrete transverse members 210 and 220 each include transverse concrete transverse members 211a, 211b and 211c and longitudinal concrete transverse members 212a to 212e, respectively, as shown in FIG. 6b) Is precastly manufactured in a lattice shape to serve as a crossbar of the lattice-type approach block 200. [

[Construction method of railway slab track structure 100 provided with lattice-type approach block 200]

FIG. 7 is a flowchart illustrating a method of constructing a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention. FIGS. 8A to 8F are views These drawings show the formation process of the grid-like approach block in the construction of the railway slab track structure.

7, a method of constructing a railway slab track structure including a lattice-type approach block according to an embodiment of the present invention is a railway slab track structure formed on a bridge 130 and a structure connecting portion or a earth connection portion of a railway, First, the concrete transverse members 210 and 220 of the lattice-type approach block 200 to be installed in the structure connecting portion are precast fabricated (S110). Specifically, as shown in FIG. 8A, the concrete transverse members 210 and 220 of the lattice-type approach block 200 are precasted, and the concrete transverse members 210 and 220 are formed substantially the same.

Next, the concrete treated gravel 140 and the underfill 150 are formed on the back surface of the alternating structure 120 of the structure connection portion S120.

Next, the lower concrete longitudinal member 240 of the lattice-type approach block 200 is buried on the concrete-treated gravel 140 in a field installation manner (S130). Specifically, as shown in FIG. 8B, the lower concrete longitudinal members 241 to 244, which are different in length so as to gradually change the support rigidity in the vertical direction at the bridge 130 and the structure connecting portion of the railway, Are continuously buried and arranged on the substrate 140.

Next, the lower concrete transverse member 220 is coupled to the lower concrete longitudinal member 240 (S140). Specifically, as shown in FIG. 8C, an assembly reinforcing bar (not shown) formed on the lower concrete longitudinal member 240 and an assembling reinforcing bar (not shown) formed on the lower concrete lateral member 220 The lower concrete longitudinal member 240 can be joined to the lower concrete lateral member 220 by connecting and placing concrete.

Next, the upper concrete longitudinal member 230 is joined to the lower concrete lateral member 220 (S150). Specifically, as shown in FIG. 8D, an assembled reinforcing bar (not shown) formed on the lower concrete transverse member 220 and an assembled reinforcing bar (not shown) formed on the upper concrete longitudinal member 230 And the upper concrete longitudinal member 230 can be joined onto the lower concrete lateral member 220 by pouring concrete.

Next, the upper concrete transverse member 210 is coupled onto the upper concrete longitudinal member 230 (S160). 8E, an assembled reinforcing bar (not shown) formed on the upper concrete longitudinal member 230 and an assembled reinforcing bar (not shown) formed on the upper concrete longitudinal member 230, And the upper concrete longitudinal member 230 can be joined to the upper concrete lateral member 210 by pouring concrete. At this time, the upper and lower concrete transverse members 210 and 220 and the upper and lower concrete longitudinal members 230 and 240 are manufactured in a lattice frame structure and act as Rahmen. The upper end of the upper concrete transverse member 210 disposed at the farthest position from the backside of the alternation 120 serves as a cantilever and has the same rigidity as the ground panel 110, Respectively.

The upper and lower concrete transverse members 210 and 220 of the lattice-type approach block 200 serve as a cross beam of the grid-like approach block 200 to support a horizontal load, The lower concrete longitudinal members 230 and 240 serve as pillars of the grid-like approach block 200 to support a vertical load. At this time, each of the upper and lower concrete transverse members 210 and 220 is pre-cast in a lattice form of the transverse concrete transverse member and the longitudinal concrete transverse member to serve as a crossing of the lattice-type approach block 200.

In addition, each of the upper and lower concrete longitudinal members 230 and 240 is installed in a spot-putting manner so as to be able to engage with a lower portion of an intersection of the transverse concrete transverse member and the longitudinal concrete transverse member, The end of the upper concrete transverse member 210 disposed at the farthest position from the backside of the alternation 120 serves as a cantilever and has the same rigidity as the ground panel 110 .

Next, the upper embankment is laminated on the lower embankment 150 (S170).

Next, the concrete upper plate 170 is installed to be joined to the upper concrete transverse member 210 (S180). Specifically, as shown in FIG. 8F, the upper concrete transverse member 210 is bonded onto the concrete upper plate 170, and subsequently, a rail slab orbit is formed on the concrete upper plate 170.

9 is a view for explaining that a railway slab track structure having a lattice-type approach block according to an embodiment of the present invention secures a rigid support force.

In the railway slab track structure 100 provided with the lattice-type approach block according to the embodiment of the present invention, the lattice-type approach block 200 is constructed such that the concrete lattice frame structure is moved as Rahmen The vertical load is supported by the concrete transverse member, and the vertical supporting force is supported by the concrete longitudinal member as a column. Particularly, by arranging the concrete longitudinal members 240 having different lengths continuously on the concrete treated gravel 140 at the bridge connecting portions of the bridges and the railway, the support rigidity in the vertical direction gradually changes . Accordingly, it is possible to prevent settlement after laying the concrete slab trajectory by the lattice-type approach block having better workability and superior performance than the conventional approach block, and to prevent the occurrence of cracks.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: railway slab track structure provided with a grid-type approach block
200: Grid-type approach block
300: Train
110: Paperboard
120: Shift
130: Bridge
140: Concrete treated gravel
150: Substrate
160: Upper cover
170: Concrete top plate
180: Railway slab track
210: Upper concrete transverse member
220: Lower concrete lateral member
230, 231 to 235: Upper concrete longitudinal member
240: Lower concrete longitudinal member
211a to 211c: transverse concrete transverse member
212a to 212e: longitudinal concrete horizontal member
241 to 244: Variable-length lower concrete longitudinal members

Claims (14)

1. A railway slab track structure formed on a structure connecting portion or a ground connecting portion of a bridge and a railway,
A concrete treated gravel 140 installed on the backside of the bridge 120 to secure a leading end supporting force at the bridge connecting structure of the bridge 130 and the railway;
A bottom filler 150 laminated on the paperboard 110 at the side of the concrete treated gravel 140;
The upper and lower concrete transverse members 210 and 220 and the upper and lower concrete longitudinal members 230 and 240 are manufactured in a lattice frame structure and act as Rahmen, A lower concrete longitudinal member 240 having a different length is continuously embedded in the concrete treated gravel 140 so as to gradually change the support rigidity in the vertical direction at the structure connection portion of the lattice approach block 200 );
An upper embankment 160 laminated on the lower embankment 150;
A concrete upper plate (170) formed on the grid-like approach block (200) and the upper clayey (160) as a concrete treated clay; And
A rail slab track 180 formed on the concrete top plate 170,
And a lattice-type approach block including the lattice-like approach block. The method according to claim 1,
The upper and lower concrete transverse members 210 and 220 of the grid-like approach block 200 serve as cross beams of the grid-like approach block 200 to support a horizontal load, Wherein the longitudinal members (230, 240) serve as columns of the grid-like approach block (200) to support vertical loads. 3. The method of claim 2,
The number of the upper and lower concrete transverse members 210 and 220 and the upper and lower concrete longitudinal members 230 and 240 are respectively different according to the width of the bridge 130 and the height of the alternation 120 And a lattice-type approach block having a plurality of lattice-type approach blocks. The method of claim 1, wherein the grid-like approach block (200)
A lower concrete longitudinal member (240) continuously disposed at different lengths on the concrete treated gravel (140) so as to gradually change the support stiffness in the vertical direction at the bridge (130) and the structure connection portion of the railway;
A lower concrete transverse member 220 pre-cast and joined to the lower concrete longitudinal member 240;
An upper concrete longitudinal member 230 coupled with the lower concrete transverse member 220; And
A top concrete transverse member 210, which is pre-cast and engages with the top concrete longitudinal member 230,
And a lattice-type approach block including the lattice-like approach block. 5. The method of claim 4,
Wherein each of the upper and lower concrete transverse members 210 and 220 is a precursor of a transverse concrete transverse member and a longitudinal concrete transverse member in a lattice form to serve as a crossing of the lattice type approach block 200. [ A railway slab track structure having an approach block. 6. The method of claim 5,
Wherein the upper concrete transverse member (210) is bonded onto the concrete top plate (170). 6. The method of claim 5,
Each of the upper and lower concrete longitudinal members 230 and 240 is installed in a spot-putting manner so as to be able to engage with a lower portion of an intersection of the transverse concrete transverse member and the longitudinal concrete transverse member, Wherein the rail-slab track structure is a rail-slab track structure having a grid-like approach block. 5. The method of claim 4,
The end of the upper concrete transverse member 210 disposed at the farthest position from the backside of the alternation 120 serves as a cantilever and has the same rigidity as the ground panel 110. [ Railway slab track structure. A method of constructing a railway slab track structure formed on a structure connecting portion of a bridge and a railway or a ground connecting portion,
a) pre-casting the concrete transverse members (210, 220) of the lattice-type approach block (200) to be connected to the structure connecting portion;
b) constructing the concrete treated gravel (140) and the underfill (150) on the backside (120) of the structure connection part;
c) burying the lower concrete longitudinal member (240) of the lattice-type approach block (200) on the concrete treated gravel (140) in a field casting manner;
d) coupling the lower concrete transverse member (220) onto the lower concrete longitudinal member (240);
e) joining the upper concrete longitudinal member (230) on the lower concrete transverse member (220);
f) joining the upper concrete transverse member (210) on the upper concrete longitudinal member (230); And
g) constructing the concrete top plate 170 to be joined to the upper concrete transverse member 210
, ≪ / RTI &
In the step c), the lower concrete longitudinal member 240 having a different length is gradually buried on the concrete treated gravel 140 so as to gradually change the support rigidity in the vertical direction at the bridges 130 and the structure connecting portion of the railway. Wherein the slab-type approach block includes a plurality of slab-type approach blocks. 10. The method of claim 9,
The upper and lower concrete transverse members 210 and 220 and the upper and lower concrete longitudinal members 230 and 240 are manufactured in a lattice frame structure and behave as Rahmen in the step c) Wherein the slab-like approach block includes a plurality of lattice-type approach blocks. 10. The method of claim 9,
The upper and lower concrete transverse members 210 and 220 of the grid-like approach block 200 serve as cross beams of the grid-like approach block 200 to support a horizontal load, Wherein the longitudinal members (230, 240) serve as columns of the grid-like approach block (200) to support a vertical load. 12. The method of claim 11,
Wherein each of the upper and lower concrete transverse members 210 and 220 is a precursor of a transverse concrete transverse member and a longitudinal concrete transverse member in a lattice form to serve as a crossing of the lattice type approach block 200. [ A method of constructing a railway slab track structure having an approach block. 13. The method of claim 12,
Each of the upper and lower concrete longitudinal members 230 and 240 is installed in a spot-putting manner so as to be able to engage with a lower portion of an intersection of the transverse concrete transverse member and the longitudinal concrete transverse member, Wherein the slab-like approach block has a lattice-type approach block. 14. The method of claim 13,
The upper end of the upper concrete transverse member 210 disposed at the farthest distance from the rear surface of the alternation 120 serves as a cantilever and has a rigidity similar to that of the ground panel 110. [ Construction method of railway slab track structure.

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